Computers always perform their calculations with finite accuracy. The "general purpose" var variables can store numbers, pointers, or handles. Numbers are stored in fixed point format in the range of -999999.999..+999999.999 with a precision of 0.001. This is sufficient in all normal cases for calculating coordinates, angles or anything you need in a virtual world. However, care must be taken when calculating with extremely large or extremely small values. For instance, a multiplication by 100 has an inaccuracy of 0.001/100 = 0.001%, while the result of a division by 0.01 - mathematically the same - is inaccurate by 0.001/0.01 = 10%!